[evlatests] VLA RFI sweep 4/2021

[Emmanuel Momjian]

The spectra of the April 27, 2021, RFI sweep are now posed online at

https://science.nrao.edu/facilities/vla/observing/RFI/April-2021-D-configuration/April-2021-D-configuration

For each receiver band there are also subband based plots (PDF files) 
linked from their respective pages to give a more zoomed-in view.

For reference, previous RFI sweeps are posted at:

https://science.nrao.edu/facilities/vla/docs/manuals/obsguide/rfi#section-4

Emmanuel